在红貌6上安装和配置XEN

战胜自己

　　http://7cm.org/wiki/CentOs/%E5%AE%89%E8%A3%85XEN%E9%85%8D%E7%BD%AE%E7%AC%94%E8%AE%B0
　　



CentOs/安装XEN配置笔记


CentOs/管理XEN虚拟机


目录

• 
  
  • 7cm 开源软件应用维基
    
  
  
  
• CentOs/安装XEN配置笔记
  
• 硬件参数
  
• 网络配置
  
  
  • 配置域名解析
    
  • 修改主机名
    
  • 修改hosts文件
    
  • 启动网卡0
    
  • 关闭 SElinux
    
  
  
  
• 安装必备软件
  
  
  • 更新 yum
    
  • 安装 screen
    
  • 安装 vim
    
  • 安装 wget tcpdump ntp ntpdate man smartmontools links lynx ethtool xorg-x11-xauth
    
  • 安装 make gcc
    
  
  
  
• 调整启动菜单
  
• Installing required packages to compile Xen rpms
  
  
  • 一个32位的glibc-devel也是必须的
    
  • Rebuilding and installing Xen src.rpm
    
  • 回到上级目录 rpmbuild/SPECS
    
  • 安装新编译的 RPM
    
  
  
  
• Installing upstream Xen dom0 capable kernel
  
  
  • git remote show origin
    
  • 私自更改了路径。原来的路径xen/stable-2.6.32.x不存在了。
    
  
  
  
• Configure the kernel
  
• install the kernel
  
  
  • 现在是时候编辑启动菜单配置文件 "grub.conf" 然后添加一个Xen+dom0 的入口:
    
  • 禁用 KSM services, 当前这个服务不能和 Xen 工作:
    
  
  
  
• 重启，重启后验证 XEN
  
• Updating the dom0 kernel
  
• Using libvirt and virt-manager with Xen
  
  
  • Install libvirt and virt-manager:
    
  • 之后，我们重新编译 libvirt ：
    
  • 安装 xen-enabled rpms (需要 --force 参数，因为有些版本的 libvirt
    已经安装过了):
    
  • 确认 "libvirtd" 在启动时会自动启动:
    
  • 现在重启系统，并启动 Xen 镜像!
    
  • 验证 libvirt with Xen
    
  
  
  
• 让我想到了<盗梦空间>
  
  
  • 第二层梦境
    
  
  
  
• 参考 ：
  

安装是安装默认选项安装的，分区也没有自己定制，反正就当时测试了。 而且选的是minimal 最小化安装。



硬件参数


CentOs/安装XEN配置笔记/硬件信息



网络配置


装完之后，参考
CentOs/网络配置 配置网卡 eth0
vi /etc/sysconfig/network-scripts/ifcfg-eth0


DEVICE=&quot;eth0&quot;
HWADDR=&quot;00:15:17:02:49:E8&quot;
NM_CONTROLLED=&quot;no&quot;
ONBOOT=&quot;no&quot;
BOOTPROTO=&quot;static&quot;
IPADDR=&quot;192.168.0.19&quot;
NETMASK=&quot;255.255.255.0&quot;
NETWORK=&quot;192.168.0.0&quot;
TYPE=&quot;Ethernet&quot;



配置域名解析


vi /etc/resolv.conf

nameserver 192.168.0.1
nameserver 202.96.134.133



修改主机名




# hostname intel5000v



修改hosts文件


vi /etc/hosts

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1       intel5000v



启动网卡0


#ifup eth0
网络通了，但是重启之后，仍然没有自动激活网卡0， 奇怪？

问题在 ONBOOT=&quot;no&quot; 这句，修改成 ONBOOT=&quot;yes&quot; 问题解决。

这次可以了。

[iyunv@intel5000v lidong]# service network restart
正在关闭接口 eth0：                                        [确定]
关闭环回接口：                                             [确定]
弹出环回接口：                                             [确定]
弹出界面 eth0：
                                                         [确定]



关闭 SElinux


vi /etc/selinux/config

SELINUX=disabled



安装必备软件




更新 yum




yum update

CentOs/安装配置笔记/yum-update



安装 screen


首先安装这个软件是为了，后面有些操作需要消耗很多时间，用screen后，终端断开，任务不会终止



[iyunv@intel5000v lidong]# yum install screen
Loaded plugins: fastestmirror
base                                                     | 3.7 kB     00:00     
base/primary_db                                          | 4.5 MB     00:09     
extras                                                   | 3.5 kB     00:00     
extras/primary_db                                        | 6.3 kB     00:00     
updates                                                  | 3.5 kB     00:00     
updates/primary_db                                       | 3.0 MB     00:05     
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package screen.x86_64 0:4.0.3-16.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package          Arch             Version                 Repository      Size
================================================================================
Installing:
screen           x86_64           4.0.3-16.el6            base           494 k

Transaction Summary
================================================================================
Install       1 Package(s)

Total download size: 494 k
Installed size: 795 k
Is this ok [y/N]: y


Downloading Packages:
screen-4.0.3-16.el6.x86_64.rpm                           | 494 kB     00:01     
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Importing GPG key 0xC105B9DE:
Userid : CentOS-6 Key (CentOS 6 Official Signing Key) <centos-6-key@centos.org>
Package: centos-release-6-2.el6.centos.7.x86_64 (@anaconda-CentOS-201112091719.x86_64/6.2)
From   : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : screen-4.0.3-16.el6.x86_64                                   1/1

Installed:
  screen.x86_64 0:4.0.3-16.el6                                                  

Complete!



安装 vim




yum install vim
Loaded plugins: fastestmirror
Determining fastest mirrors
* base: mirrors.ta139.com
* extras: mirrors.ta139.com
* updates: mirrors.ta139.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package vim-enhanced.x86_64 2:7.2.411-1.6.el6 will be installed
--> Processing Dependency: vim-common = 2:7.2.411-1.6.el6 for package: 2:vim-enhanced-7.2.411-1.6.el6.x86_64
--> Processing Dependency: perl(:MODULE_COMPAT_5.10.1) for package: 2:vim-enhanced-7.2.411-1.6.el6.x86_64
--> Processing Dependency: libperl.so()(64bit) for package: 2:vim-enhanced-7.2.411-1.6.el6.x86_64
--> Processing Dependency: libgpm.so.2()(64bit) for package: 2:vim-enhanced-7.2.411-1.6.el6.x86_64
--> Running transaction check
---> Package gpm-libs.x86_64 0:1.20.6-12.el6 will be installed
---> Package perl.x86_64 4:5.10.1-119.el6_1.1 will be installed
--> Processing Dependency: perl(Pod::Simple) for package: 4:perl-5.10.1-119.el6_1.1.x86_64
--> Processing Dependency: perl(version) for package: 4:perl-5.10.1-119.el6_1.1.x86_64
--> Processing Dependency: perl(Module::Pluggable) for package: 4:perl-5.10.1-119.el6_1.1.x86_64
---> Package perl-libs.x86_64 4:5.10.1-119.el6_1.1 will be installed
---> Package vim-common.x86_64 2:7.2.411-1.6.el6 will be installed
--> Running transaction check
---> Package perl-Module-Pluggable.x86_64 1:3.90-119.el6_1.1 will be installed
---> Package perl-Pod-Simple.x86_64 1:3.13-119.el6_1.1 will be installed
--> Processing Dependency: perl(Pod::Escapes) >= 1.04 for package: 1:perl-Pod-Simple-3.13-119.el6_1.1.x86_64
---> Package perl-version.x86_64 3:0.77-119.el6_1.1 will be installed
--> Running transaction check
---> Package perl-Pod-Escapes.x86_64 1:1.04-119.el6_1.1 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package                   Arch       Version                    Repository
                                                                           Size
================================================================================
Installing:
vim-enhanced              x86_64     2:7.2.411-1.6.el6          base     896 k
Installing for dependencies:
gpm-libs                  x86_64     1.20.6-12.el6              base      28 k
perl                      x86_64     4:5.10.1-119.el6_1.1       base      10 M
perl-Module-Pluggable     x86_64     1:3.90-119.el6_1.1         base      37 k
perl-Pod-Escapes          x86_64     1:1.04-119.el6_1.1         base      30 k
perl-Pod-Simple           x86_64     1:3.13-119.el6_1.1         base     209 k
perl-libs                 x86_64     4:5.10.1-119.el6_1.1       base     575 k
perl-version              x86_64     3:0.77-119.el6_1.1         base      49 k
vim-common                x86_64     2:7.2.411-1.6.el6          base     6.0 M

Transaction Summary
================================================================================
Install       9 Package(s)

Total download size: 18 M
Installed size: 54 M
Is this ok [y/N]: y
Downloading Packages:
(1/9): gpm-libs-1.20.6-12.el6.x86_64.rpm                 |  28 kB     00:00     
(2/9): perl-5.10.1-119.el6_1.1.x86_64.rpm                |  10 MB     00:20     
(3/9): perl-Module-Pluggable-3.90-119.el6_1.1.x86_64.rpm |  37 kB     00:00     
(4/9): perl-Pod-Escapes-1.04-119.el6_1.1.x86_64.rpm      |  30 kB     00:00     
(5/9): perl-Pod-Simple-3.13-119.el6_1.1.x86_64.rpm       | 209 kB     00:00     
(6/9): perl-libs-5.10.1-119.el6_1.1.x86_64.rpm           | 575 kB     00:01     
(7/9): perl-version-0.77-119.el6_1.1.x86_64.rpm          |  49 kB     00:00     
(8/9): vim-common-7.2.411-1.6.el6.x86_64.rpm             | 6.0 MB     00:45     
(9/9): vim-enhanced-7.2.411-1.6.el6.x86_64.rpm           | 896 kB     00:01     
--------------------------------------------------------------------------------
Total                                           217 kB/s |  18 MB     01:24     
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : 1:perl-Pod-Escapes-1.04-119.el6_1.1.x86_64                   1/9
  Installing : 1:perl-Module-Pluggable-3.90-119.el6_1.1.x86_64              2/9
  Installing : 4:perl-libs-5.10.1-119.el6_1.1.x86_64                        3/9
  Installing : 1:perl-Pod-Simple-3.13-119.el6_1.1.x86_64                    4/9
  Installing : 3:perl-version-0.77-119.el6_1.1.x86_64                       5/9
  Installing : 4:perl-5.10.1-119.el6_1.1.x86_64                             6/9
  Installing : gpm-libs-1.20.6-12.el6.x86_64                                7/9
  Installing : 2:vim-common-7.2.411-1.6.el6.x86_64                          8/9
  Installing : 2:vim-enhanced-7.2.411-1.6.el6.x86_64                        9/9

Installed:
  vim-enhanced.x86_64 2:7.2.411-1.6.el6                                         

Dependency Installed:
  gpm-libs.x86_64 0:1.20.6-12.el6                                               
  perl.x86_64 4:5.10.1-119.el6_1.1                                             
  perl-Module-Pluggable.x86_64 1:3.90-119.el6_1.1                              
  perl-Pod-Escapes.x86_64 1:1.04-119.el6_1.1                                    
  perl-Pod-Simple.x86_64 1:3.13-119.el6_1.1                                    
  perl-libs.x86_64 4:5.10.1-119.el6_1.1                                         
  perl-version.x86_64 3:0.77-119.el6_1.1                                       
  vim-common.x86_64 2:7.2.411-1.6.el6                                          

Complete!




安装 wget tcpdump ntp ntpdate man smartmontools links lynx ethtool xorg-x11-xauth


首先进入screen 终端。然后安装上面那些软件。

screen
yum install wget tcpdump ntp ntpdate man smartmontools links lynx ethtool xorg-x11-xauth

CentOs/安装配置笔记/安装细节2



安装 make gcc




yum install make gcc



调整启动菜单

• 通过调整 grub.conf 增加 grub timeout 时间, 注释 &quot;hiddenmenu&quot; 选项:
  

vi /boot/grub/grub.conf

#timeout=5
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
#hiddenmenu



Installing required packages to compile Xen rpms


用下面一条命令安装编译 Xen src.rpm 需要的包。


# yum groupinstall &quot;Development tools&quot; &quot;Additional Development&quot; &quot;Debugging Tools&quot; &quot;System administration tools&quot; &quot;Compatibility libraries&quot; &quot;Console internet tools&quot; &quot;Desktop Platform Development&quot;

CentOs/安装XEN配置笔记/安装细节3

还要安装一些附加的包,这些包在编译 Xen 是需要用到的。:



#yum install transfig wget texi2html libaio-devel dev86 glibc-devel e2fsprogs-devel gitk mkinitrd iasl xz-devel bzip2-devel pciutils-libs pciutils-devel SDL-devel libX11-devel gtk2-devel bridge-utils PyXML qemu-common qemu-img mercurial texinfo libuuid-devel



一个32位的glibc-devel也是必须的




yum install glibc-devel.i686



Rebuilding and installing Xen src.rpm




# mkdir /root/src && cd /root/src
# wget http://pasik.reaktio.net/fedora/xen-4.0.1-6.fc14.src.rpm
# rpm -i xen-4.0.1-6.fc14.src.rpm



回到上级目录 rpmbuild/SPECS




# cd /root/rpmbuild/SPECS
# rpmbuild -bb xen.spec

过一会，可以看到 :

Wrote: /root/rpmbuild/RPMS/x86_64/xen-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-libs-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-runtime-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-hypervisor-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-doc-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-devel-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-licenses-4.0.1-6.fc13.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/xen-debuginfo-4.0.1-6.fc13.x86_64.rpm



安装新编译的 RPM


(Note: This assumes you have already satisfied the dependencies for installing Xen)



Try installing the rpms:

# cd /root/rpmbuild/RPMS/x86_64/
# rpm -Uvh xen*4.0.1-6*.rpm

error: Failed dependencies:
        /usr/bin/qemu-nbd is needed by xen-runtime-4.0.1-6.el6.x86_64

出现什么问题了? It seems RHEL6 does not have &quot;qemu-common&quot; rpm available, which includes &quot;qemu-nbd&quot; binary. So we need to grab qemu src.rpm from Fedora and rebuild it for RHEL6 to get the required &quot;qemu-common&quot; rpm.

查看RHEL6中 &quot;qemu&quot; 版本 :


# rpm -qa | grep qemu
qemu-img-0.12.1.2-2.209.el6_2.4.x86_64

现在打补丁。


[iyunv@el6 x86_64]# cd /root/src
[iyunv@el6 src]# wget http://archives.fedoraproject.org/pub/archive/fedora/linux/updates/13/SRPMS/qemu-0.13.0-1.fc13.src.rpm

[iyunv@el6 src]# rpm -i qemu-0.13.0-1.fc13.src.rpm
[iyunv@el6 src]# cd /root/rpmbuild/SPECS
[iyunv@el6 SPECS]# rpmbuild -bb qemu.spec

安装

cd /root/rpmbuild/RPMS
# rpm -Uvh qemu-common-0.13.0-1.el6.x86_64.rpm
Preparing...                ########################################### [100%]
   1:qemu-common            ########################################### [100%]

现在可以安装 Xen rpms:

[iyunv@intel5000v x86_64]# rpm -Uvh qemu-common-0.13.0-1.el6.x86_64.rpm
Preparing...                ########################################### [100%]
   1:qemu-common            ########################################### [100%]
[iyunv@intel5000v x86_64]# rpm -Uvh xen*4.0.1-6*.rpm
Preparing...                ########################################### [100%]
   1:xen-licenses           ########################################### [ 13%]
   2:xen-libs               ########################################### [ 25%]
   3:xen-hypervisor         ########################################### [ 38%]
   4:xen-runtime            ########################################### [ 50%]
   5:xen                    ########################################### [ 63%]
   6:xen-devel              ########################################### [ 75%]
   7:xen-doc                ########################################### [ 88%]
   8:xen-debuginfo          ########################################### [100%]

Now you're done installing Xen hypervisor, tools and libraries.



Installing upstream Xen dom0 capable kernel


现在要装 upstream *Xen* kernel , 这基于 kernel.org Linux 2.6.32.x kernel. 这个 kernel 和 Redhat RHEL6 kernel是不同的. Many drivers are newer versions in Redhat's kernel, and Redhat's kernel might have more features than the kernel.org kernel. Due to the
driver version differences you might experience problems on some hardware, for example on servers using LSI/DELL RAID adapters. 可能要手动解决这些问题.

Clone the kernel git repository from kernel.org and check out the &quot;xen/stable-2.6.32.x&quot; long-term maintained branch.



[iyunv@el6 x86_64]# mkdir /root/kernel && cd /root/kernel
[iyunv@el6 kernel]# git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
[iyunv@el6 kernel]# cd linux-2.6-xen
[iyunv@el6 linux-2.6-xen]# git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x

[iyunv@el6 linux-2.6-xen]# git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x 这一句报错！


git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x
fatal: git checkout: updating paths is incompatible with switching branches.
Did you intend to checkout 'origin/xen/stable-2.6.32.x' which can not be resolved as commit?



git remote show origin




[iyunv@intel5000v linux-2.6-xen]# git remote show origin
* remote origin
  Fetch URL: git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
  Push  URL: git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
  HEAD branch: master
  Remote branches:
    hid-battery                    tracked
    hid-battery-scope              tracked
    master                         tracked
    power-supply-scope             tracked
    upstream/jump-label-noearly    tracked
    upstream/linux-next            tracked
    upstream/microcode             tracked
    upstream/pvticketlock-slowflag tracked
    upstream/ticketlock-cleanup    tracked
    upstream/xen                   tracked
    upstream/xen-settime           tracked
    xen/mmu-perf-tweak             tracked
    xen/next-2.6.32                tracked
    xen/next-3.1                   tracked
    xen/next-3.2                   tracked
    xen/no-pv                      tracked
  Local branch configured for 'git pull':
    master merges with remote master
  Local ref configured for 'git push':
    master pushes to master (up to date)




私自更改了路径。原来的路径xen/stable-2.6.32.x不存在了。


git fetch


[iyunv@intel5000v linux-2.6-xen]# git checkout -b xen/stable-2.6.32.x origin/xen/stable-2.6.32.x
fatal: git checkout: updating paths is incompatible with switching branches.
Did you intend to checkout 'origin/xen/stable-2.6.32.x' which can not be resolved as commit?
[iyunv@intel5000v linux-2.6-xen]# git checkout -b xen/stable-2.6.32.x origin/xen/next-2.6.32
Checking out files: 100% (30367/30367), done.
Branch xen/stable-2.6.32.x set up to track remote branch xen/next-2.6.32 from origin.
Switched to a new branch 'xen/stable-2.6.32.x'
[iyunv@intel5000v linux-2.6-xen]#



Configure the kernel




You can run make menuconfig, and go through the config file to manually activate the relevant Xen options. (Hint: Press the '/' key to bring up a search option, and search for 'xen'.

Alternatively, download a reference config-file for the 2.6.32.x kernel. Also run &quot;oldconfig&quot; to adapt the configuration to current kernel version (if it's different):

# wget -O .config http://pasik.reaktio.net/xen/pv_ops-dom0-debug/config-2.6.32.25-pvops-dom0-xen-stable-x86_64
# make oldconfig

# make clean
# make -j4 bzImage && make -j4 modules && make modules_install
....

漫长的30分钟之后
  INSTALL /lib/firmware/keyspan_pda/xircom_pgs.fw
  INSTALL /lib/firmware/vicam/firmware.fw
  INSTALL /lib/firmware/cpia2/stv0672_vp4.bin
  INSTALL /lib/firmware/yam/1200.bin
  INSTALL /lib/firmware/yam/9600.bin
  DEPMOD  2.6.32.57

Note the example config-file above is DEBUG-enabled possibly causing big performance hits, so don't use it for performance testing!



install the kernel


接下来我们安装这个kernel 并且准备好启动镜像 initrd (initramfs) . 在本例中 Kernel 版本是&quot;2.6.32.57&quot;:


[ linux-2.6-xen]# depmod -a 2.6.32.57
[ linux-2.6-xen]# cp -a arch/x86/boot/bzImage /boot/vmlinuz-2.6.32.57
[ linux-2.6-xen]# cp -a System.map /boot/System.map-2.6.32.57
[ linux-2.6-xen]# cp -a .config /boot/config-2.6.32.57
[ linux-2.6-xen]# cd /boot
[ boot]# dracut initramfs-2.6.32.57.img 2.6.32.57

注意!如果你使用的系统LSI和/或戴尔RAID适配器（使用megaraid_sas驱动程序），你需要手动更新驱动程序版本！ Linux2.6.32.25 提供的驱动程序版本太旧，它不会“工作（磁盘将不会在系统启动时启用）。有关更新版本的驱动程序的信息：http://lists.xensource.com/archives/html/xen-devel/2010-11/msg00250.html




现在是时候编辑启动菜单配置文件 &quot;grub.conf&quot; 然后添加一个Xen&#43;dom0 的入口:




-rw-r--r--. 1 root root  14M  5月  8 01:52 initramfs-2.6.32-220.13.1.el6.x86_64.img
-rw-r--r--. 1 root root  14M  5月  7 23:26 initramfs-2.6.32-220.el6.x86_64.img
-rw-r--r--  1 root root  88M  5月  9 18:02 initramfs-2.6.32.57.img

可以看到刚刚编译的哪个 initramfs-2.6.32.57.img 体积庞大，有88M


# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/mapper/vg_intel5000v-lv_root
#          initrd /initrd-[generic-]version.img
#boot=/dev/ddf1_4c5349202020202080862682000000004711471100001450
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
#hiddenmenu
title CentOS (2.6.32-220.13.1.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-220.13.1.el6.x86_64 ro root=/dev/mapper/vg_intel5000v-lv_root rd_DM_UUID=ddf1_4c5349202020202080862682000000004711471100001450 rd_NO_LUKS rd_LVM_LV=vg_intel5000v/lv_root rd_NO_MD quiet rhgb crashkernel=auto LANG=zh_CN.UTF-8  KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg_intel5000v/lv_swap
        initrd /initramfs-2.6.32-220.13.1.el6.x86_64.img
title CentOS (2.6.32-220.el6.x86_64)
        root (hd0,0)
        kernel /vmlinuz-2.6.32-220.el6.x86_64 ro root=/dev/mapper/vg_intel5000v-lv_root rd_DM_UUID=ddf1_4c5349202020202080862682000000004711471100001450 rd_NO_LUKS rd_LVM_LV=vg_intel5000v/lv_root rd_NO_MD quiet rhgb crashkernel=auto LANG=zh_CN.UTF-8  KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg_intel5000v/lv_swap
        initrd /initramfs-2.6.32-220.el6.x86_64.img

title Xen 4.0 with Linux 2.6.32.57 dom0
        root (hd0,0)
        kernel /xen.gz dom0_mem=1024M loglvl=all guest_loglvl=all
        module /vmlinuz-2.6.32.57 ro root=/dev/mapper/vg_intel5000v-lv_root rd_DM_UUID=ddf1_4c5349202020202080862682000000004711471100001450  rd_LVM_LV=vg_intel5000v/lv_root nomodeset
        module /initramfs-2.6.32.57.img




禁用 KSM services, 当前这个服务不能和 Xen 工作:




[iyunv@el6 ~]# chkconfig ksm off
[iyunv@el6 ~]# chkconfig ksmtuned off



重启，重启后验证 XEN




#reboot
重启后，登录系统执行 :
[iyunv@intel5000v lidong]# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  1024     4     r-----     65.0



[iyunv@intel5000v lidong]# xm info
host                   : intel5000v
release                : 2.6.32.57
version                : #1 SMP Wed May 9 17:26:03 CST 2012
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2660
hw_caps                : bfebfbff:20000800:00000000:00000180:0000e4bd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 4090
free_memory            : 3014
node_to_cpu            : node0:0-3
node_to_memory         : node0:3014
node_to_dma32_mem      : node0:2487
max_node_id            : 0
xen_major              : 4
xen_minor              : 0
xen_extra              : .1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        : dom0_mem=1024M loglvl=all guest_loglvl=all
cc_compiler            : gcc version 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC)
cc_compile_by          : lidong
cc_compile_domain      :
cc_compile_date        : Tue May  8 23:43:23 CST 2012
xend_config_format     : 4

从上面输出，我们可以看出，当前运行的 Xen 虚拟机版本是 version 4.0.1 (xen_major, xen_minor, xen_extra) with Linux 2.6.32.57 dom0 kernel.



Updating the dom0 kernel




[iyunv@el6 ~]# mkdir /root/kernel/linux-2.6-xen
[iyunv@el6 linux-2.6-xen]# make clean
[iyunv@el6 linux-2.6-xen]# git pull
[iyunv@el6 linux-2.6-xen]# git log | less

执行 git log |less 结果：

commit a938a246d34912423c560f475ccf1ce0c71d9d00
Merge: 8326829 1897bf2
Author: Jeremy Fitzhardinge <jeremy@goop.org>
Date:   Mon Mar 19 10:52:00 2012 -0700

    Merge commit 'v2.6.32.57' into xen/next-2.6.32
   
    * commit 'v2.6.32.57': (22 commits)
      Linux 2.6.32.57
      net: sock_queue_err_skb() dont mess with sk_forward_alloc
      net: fix sk_forward_alloc corruptions
      mmc: cb710 core: Add missing spin_lock_init for irq_lock of struct cb710_chip
      USB: usbserial: add new PID number (0xa951) to the ftdi driver
      usb: Skip PCI USB quirk handling for Netlogic XLP
      usb: gadget: zero: fix bug in loopback autoresume handling
      Staging: android: binder: Fix crashes when sharing a binder file between processes
      Staging: android: binder: Don't call dump_stack in binder_vma_open
      Staging: asus_oled: fix image processing
      atmel_lcdfb: fix usage of CONTRAST_CTR in suspend/resume
      eCryptfs: Infinite loop due to overflow in ecryptfs_write()
      drm/i915: Fix TV Out refresh rate.
      udf: Mark LVID buffer as uptodate before marking it dirty
      rpc client can not deal with ENOSOCK, so translate it into ENOCONN
      NFSv4: Fix open recovery
      NFSv4: Handle NFS4ERR_GRACE when recovering an expired lease.
      NFSv4: Ensure the state manager handles NFS4ERR_NO_GRACE correctly
      NFSv4: The state manager shouldn't exit on errors that were handled
      NFSv4: Fix up the callers of nfs4_state_end_reclaim_reboot
      ...

commit 8326829847694d598382b3c5717f220e30b03137
Merge: 1aaf53e adb67a7



Using libvirt and virt-manager with Xen




Install libvirt and virt-manager:




[iyunv@intel5000v linux-2.6-xen]# yum install libvirt virt-manager xorg-x11-xauth

默认的 RHEL6 下面的 libvirt 并不兼容 Xen .你可以验证这一点，通过在台式机或者笔记本上使用 带X11的 ssh 链接 dom0, 尝试运行 &quot;virt-manager&quot;:


[iyunv@intel5000v linux-2.6-xen]# virt-manager &
[1] 3050
[iyunv@intel5000v linux-2.6-xen]# Traceback (most recent call last):
  File &quot;/usr/share/virt-manager/virt-manager.py&quot;, line 383, in <module>
    main()
  File &quot;/usr/share/virt-manager/virt-manager.py&quot;, line 286, in main
    raise gtk_error
RuntimeError: could not open display

这个错误可以通过重新编译支持XEN的 libvirt rpms 来解决。

注意! 在重新编译 libvirt src.rpm 之前，你需要重启系统，并进入一个非XEN的环境，就是标准的CENTOS环境!
这是因为 RHEL6 libvirt Xen-specific 测试在 Xen dom0 环境会失败。

Verify libvirt version in RHEL6:



[iyunv@intel5000v lidong]# rpm -qa |grep libvirt
libvirt-client-0.9.4-23.el6_2.8.x86_64
libvirt-python-0.9.4-23.el6_2.8.x86_64
libvirt-0.9.4-23.el6_2.8.x86_64

Let's download the src.rpm from Redhat ftp server, patch the spec file to enable Xen support, and try rebuilding it.



[iyunv@el6 ~]# cd /root/src
[iyunv@el6 src]# wget ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/libvirt-0.8.1-27.el6.src.rpm
[iyunv@el6 src]# rpm -i libvirt-0.8.1-27.el6.src.rpm
[iyunv@el6 src]# wget http://pasik.reaktio.net/xen/patches/libvirt-spec-rhel6-enable-xen.patch
[iyunv@el6 src]# cd /root/rpmbuild/SPECS
[iyunv@el6 SPECS]# cp -a libvirt.spec libvirt.spec.orig
[iyunv@el6 SPECS]# patch -p0 < ~/src/libvirt-spec-rhel6-enable-xen.patch
patching file libvirt.spec

[iyunv@el6 SPECS]# rpmbuild -bb libvirt.spec
error: Failed build dependencies:
        libnl-devel >= 1.1 is needed by libvirt-0.8.1-27.el6.x86_64
        xhtml1-dtds is needed by libvirt-0.8.1-27.el6.x86_64
        libudev-devel >= 145 is needed by libvirt-0.8.1-27.el6.x86_64
        libpciaccess-devel >= 0.10.9 is needed by libvirt-0.8.1-27.el6.x86_64
        yajl-devel is needed by libvirt-0.8.1-27.el6.x86_64
        libpcap-devel is needed by libvirt-0.8.1-27.el6.x86_64
        avahi-devel is needed by libvirt-0.8.1-27.el6.x86_64
        parted-devel is needed by libvirt-0.8.1-27.el6.x86_64
        device-mapper-devel is needed by libvirt-0.8.1-27.el6.x86_64
        numactl-devel is needed by libvirt-0.8.1-27.el6.x86_64
        netcf-devel >= 0.1.4 is needed by libvirt-0.8.1-27.el6.x86_64

Ok, 我们需要安装缺少的包:

# yum install libnl-devel xhtml1-dtds libudev-devel libpciaccess-devel yajl-devel libpcap-devel avahi-devel parted-devel device-mapper-devel numactl-devel netcf-devel



之后，我们重新编译 libvirt ：




[iyunv@el6 SPECS]# rpmbuild -bb libvirt.spec

过一会儿，看到:

Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-0.8.1-27.el6.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-client-0.8.1-27.el6.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-devel-0.8.1-27.el6.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-python-0.8.1-27.el6.x86_64.rpm
Wrote: /root/rpmbuild/RPMS/x86_64/libvirt-debuginfo-0.8.1-27.el6.x86_64.rpm




安装 xen-enabled rpms (需要 --force 参数，因为有些版本的 libvirt 已经安装过了):




[iyunv@intel5000v x86_64]# rpm -Uvh --force libvirt-0.8.1-27.el6.x86_64.rpm libvirt-client-0.8.1-27.el6.x86_64.rpm libvirt-python-0.8.1-27.el6.x86_64.rpm
Preparing...                ########################################### [100%]
   1:libvirt-client         ########################################### [ 33%]
   2:libvirt                ########################################### [ 67%]
warning: %post(libvirt-0.8.1-27.el6.x86_64) scriptlet failed, exit status 1
   3:libvirt-python         ########################################### [100%]
[iyunv@intel5000v x86_64]#



确认 &quot;libvirtd&quot; 在启动时会自动启动:




[iyunv@el6 ~]# chkconfig --list libvirtd
libvirtd        0:off   1:off   2:off   3:on    4:on    5:on    6:off

[iyunv@intel5000v x86_64]# chkconfig --list libvirtd
libvirtd        0:关闭    1:关闭    2:关闭    3:启用    4:启用    5:启用    6:关闭



现在重启系统，并启动 Xen 镜像!




验证 libvirt with Xen




[iyunv@intel5000v lidong]# virsh list
Id 名称               状态
----------------------------------
  0 Domain-0             running

[iyunv@intel5000v lidong]# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  1024     4     r-----     69.5

So it seems to work. Now you're also able to use graphical &quot;virt-manager&quot; to manage Xen on RHEL6.



让我想到了<盗梦空间>




ssh -X lidong@192.168.0.19
连接上去后，输入
virt-manager

我的FreeBsd无法使用 ssh -X 直接连接到虚拟机上，但是通过我的FreeBsd中的虚拟CentOS系统，然后用 SSH -X 就连接到XEN了。




第二层梦境


通过本机的虚拟机VirtualBox创建的CentOS6 进入intel5000V 这台 XEN Server ,然后创建虚拟机并安装。 这是第二层梦境。





参考 ：

• 
  http://wiki.xen.org/wiki/RHEL6_Xen4_Tutorial
  
  
• 
  http://wiki.xen.org/wiki/Compiling_Xen
  
  
• 
  http://wiki.xen.org/wiki/Compiling_Kernel_2.6.32
  
  
• 
  这是用Cent5.3安装XEN,比较简单，但是对于Cent6.2参考意义不大
  
  
• 
  http://www.howtoforge.com/virtualization-with-xen-on-centos-6.2-x86_64-paravirtualization-and-hardware-virtualization